peters



iujd time WILLIAM SMITH, OF ALLGHENY CITY, PENNSYLVANIA.

Latem' Patent No. 83,668, ma Novanta 3, 1868.

IMPROVEMENT IN PIPE-MOULDIN G- MACHINE.

The Schedule referred to in these Letters Patent and making part of thesame.

.To all V'whom 'it nul/y conce/rn.:

Beit known that I, WILLIAM SMITH, of Allegheny Oity, in the county ofAllegheny, and State of Pennsylvania, have invented certain new anduseful Improvements in Machines for Moulding Cast-Iron Pipe, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings, which make part of this specification,and in which- Figure 1 represents an end elevation of my improvedpipe-mouldng machine, lthe flask and carriage being shown in section;

Figure 2, a view in elevation of the same, taken from the opposite end;

Figure 3, a side elevation of the same;

dFig'ure 4, a similar' view, taken from the opposite s1 e;

Figure 5, a horizontal section of the same;

Figure 6, a view, in perspective, of the shaft by which the movement ofthe carriage is reversed; and

Figure 7 a plan view, on. an enlarged scale, of a portion of themechanism, showing the arrangement of the counter-shafts C and D.,

My invention relates to Athat class of pipe-moulding l bearings on asliding carriage, which moves vertically in grooves or waysin an uprightframe, at or nearthe top of which is mounted the driving-shaft.

Motion is communicated from the driving-shaft to a counter-shaft, uponwhich are two loose pulleys connected with pulleys on the driving-shaftby straight and crossed belts, respectively,v either pulley of thecounter-shaft being made fast thereon, and caused to revolve therewith,at pleasure, by an arrangement hereinafter to be described, so that thecounter-shaft will revolve in thesame or a contrary direction to thedriving-shaft, according as one or the other pulley of the former ismade fast thereon.

The counter-shaft is connected 'by gearingwith a secondr counter-shaft,which carries pinions which engage-racks upon the sliding carriage, andthereby impart vertical motion thereto, fixed stops being secured uponthe carriage, which throw the pulley ofthe first counter-shaftf out ofoperation, ateach .extremity of the travel of the carriage, by causingthe former to be loose upon its shaft, and thereby stop the machine atthese points.

VA horizontal counter-shaft, carryinga spur-pinion upon one end, and abevel-pinion upon the other, is mounted in bearings on the carriage.

The spur-pinion of this shaft gears with a rack secured upon the uprightstationary frame, land the bevel-pinion with a similar bevel-pinion uponthe packer-shaft, rotary motion being thereby imparted to the latterduring the upward and downward motions of the carriage.

Ihe flask, which is borne upon a car running on rails at the basev ofthe apparatus, is held thereon by means of pivoted clamps, havingfriction-rollers upon their free ends, which iction-rollers press upon aange at the bottom of the flask, said flange resting within a ch'cularflange upon the carriage, the carriage being held in position by a bentspring attached thereto, which enters a slot in a stationary rest orstandard secured to the basel of the machine. s

In the accompanying drawings, which show a con- Venient arrangement ofparts for carrying out the objects of my invention, A A represent astationary vertical frame, to which the mechanism is attached. In thisinstance, the frame is shown as erected upon a base-plate, A', but inpractice it is usually set up in a pit, to the floor of which the top ofthe base-plate corresponds, andrthe depth of which is about equal to thedistance between the door and the top of the flask. A driving-shaft, A",4upon which pulleys, A4 A5, are keyed or otherwise secured, is mountedin bearings-at or near the top of the frame A, and a counter-shaft, O,is likewise mounted in bearings thereon, some distance below it. Thecounter-shaft G carries two loose pulleys, G C2, which are preventedfrom moving endwise by collars, C5 C, secured upon the shaft, and byshoulders thereon.

which is placed between the pulleys C* and G2, and can be movedlongitudinally upon a feather formed on the shaft, but not rotatedindependently thereof.

A groove is formed all round the periphery of the clutch C, andslots'are made in each of its ends.

Pins or keys, G3 G4, are inserted into and project from the inner sidesof the pulleys GI O2, toward the clutch, in such manner that when thelatter is moved along the counter-shaft into suiiciently close proximityto either of the pulleys, the pins thereof engage the slots upon theadjacent side ofthe clutch, and the pulley'is thereby rendered fast uponthe shaft.

When the clutch is thrown into connection with the pulley G2, thecounter-shaft will rotate inthe same direction as .the driving-shaft bymeans of the straight belt C1, and when thrown into connection with thepulley C, it will rotate in a contrary direction by means of the crossedbelt GS.

The clutch is shifted, when necessary, by means of a yoke, E, upon ahorizontal shaft, E, mounted in bearings upon the frame, which yokeenters the groove in the clutch, and moves the latter in eitherdirection, according to the movement of a shipper, E2, pivoted to theame, and having its upper end suitably donnected with the shaft E, so asto move the latter longitudinally in its bearings.

The counter-shaft C likewise carries a clutch, Cd,

' The shaft E is likewise provided with a horizontal arm, Ex, the objectof which will be hereinafter de-y scribed.`

The counter-shaft O carries a spur-pinion, 0, upon one of its ends,which gears with a similar pinion, D", secured upon a secondcounter-shaft, D, rotatnginA 'engage racks, G3 Gi, upon the carriage,and thereby impart upward or downward motion thereto, according to thedirection of rotation of the counter-shaft.

A catch, G, is secured to the upper portion of the carriage G, andanother catch, G, to the lower portion, the working-faces of each beinginclined planes, and set `in such position that when the carriage hasreached the lower extremity of its travel, the inclined face of thecatch G strikes the yoke Ee, and throws the clutch (lcl out ofconnection with that pulley of' the counter-shaft C with which it may atthe time be operating, and thereby stops the carriage. At the upperextremity of its travel, the carriage is stopped in a similar manner bythe face of the catch G striking the arm-lil* of the shaft E.

A horizontal counter-shaft, H, is mounted in bearings upon the carriageG, having secured upon one of its ends a bevel-pinion, H2, which gearswith a similar pinion, H3, upon the packer-shaft I, and a spur-pinion,H1, upon its oppositel end, which gears with a rack, A, upon .the frameA.

' By this means rotation is imparted to the packershaft during theupward and downward movements of the carriage.

J represents a cylindrical packer secured to the lower end of thepacker-shaft, and having its upper portion made in the form of a frustumof a cone, with lnukes, J5, running spirally around it.

The flask B, of ordinary construction, is borne upon a car, K, runningupon rails, B", upon the base-plate` A, or, in practice, upon the doorof the pit.

The ask B rests within a circular flange upon the car and is held firmlyin position for packing by means of clamps, L2, pivoted to the car, andhaving frictionrollers upon their free ends, which, when-turned intoposition, press upon a ange at the bottom of the ask, and hold it firmlydown upon the car. The latter is held inposition, while the s'and isbeing packed in the liask, by a bent spring, O, secured to its top,which passes through an opening in a vertical standard, N', upon thebase-plate, and holds the carin connection therewith, releasing it whenraised.

A rest, M, is attached to the top of the standard N' by a set-screw, N,passing through a slot, M', in the. rest. The latter has an angularopening in its end, against the sides of which the upper portion of theflask rests, and, by means of the slot M and setscrew N, its positioncan be regulated to suit the diameter of the flask employed.

The operation of the machine is as follows:

The carriage G being a't the upper end of its path or travel, the flaskB is placed upon thevcar K, and fastened thereon by the clamps L2. rIhecar is then pushed along the rails Bl until the flask stands beneath thepacker-shaft, and concentric therewith, in which position it is fastenedby the bent spring O and standard` N the upper part of the flask restingin the opening ofthe rest M. 'Ihe clutch C is then thrown intoconnection withthe pulley G, and motion imparted to the drivin g-shaftin the direction of the ar rows, which being communicated to the mungi-G through the counter-shafts C D, pinions Cc D Dl D2, and racks Gr3 (P,as hereinhefore described, the carriage moves downward until the packerJ rra hes the bottom of the liask B, when the catch G strikes the yokeEe, and, throwing the clutch l.)d out oi" connection with the pulley C,stops the movement of the counter-shaft, and consequently that of thecarriage. A suilicient quantity of sand being then put into the flask B,the clutch Gd is thrown into connection with the pulley G2 by means ofthe shipper E2.

The carriage Gr then commences its upward motion, the packer-shaft beingrotated by means of the pinions H2 H3 H, and rack A, as beforedescribed. This oper- K ation continues until the packer has been raisedclear of the flask, when the catch G strikes the arm E* of the shaft E,and again stops the carriage.

During the upward and rotary motion of the packer,

its linkes, Jj, wedge the sand above them against the inside of the ask,while the lower cylindrical part of the packer` smooths the sand uponthe inside of the mould.

When the packer is raised clear of the iiask, the oar is released fromthe standard N', and pushed away, to, allow of the removal of the flask,after which another can be clamped upon it, and the operation repeated.

I do not claim packing the sand in a flask by means ,of the rotation andupward movement of a packer, nor

the particular form ofpacker employed, such improvements beingcomprehended in Letters Patent granted to me, October 15, 1867, andnumbered 69,854; neither do I broadly claim the use of avertically-moving carriage, nor avlurtch engaging pins upon the sides ofloose pulleys, as such devices have been heretofore known and used; buthaving thus fully described my invention,

What I claim therein as new, and desire to secure by Letters Patent, is

l. A packer-shaft, mounted in bearings on a vertically-moving carriage,arranged and operating so as to communicate rotation to the packer-shaftduring its vertical movements, substantially in the manner described.

2. The carriage G and racks G G, in combination 'with the pinions D) D2,counter-shafts D C, gear-wheel Dd, pinion C, loose pulleys C* C2, clutchD, and drivingshaft A", arranged and operating substantially asdescribed, and for the purposes set forth.

y 3. The pivoted clamps L2, having friction-rollers upon their ends, incombinationwith the carKand flask B, as

